-3+a=18

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Solution for -3+a=18 equation:


Simplifying
-3 + a = 18

Solving
-3 + a = 18

Solving for variable 'a'.

Move all terms containing a to the left, all other terms to the right.

Add '3' to each side of the equation.
-3 + 3 + a = 18 + 3

Combine like terms: -3 + 3 = 0
0 + a = 18 + 3
a = 18 + 3

Combine like terms: 18 + 3 = 21
a = 21

Simplifying
a = 21

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